“The potential lost revenue” in respect of an inaccuracy in a document is the additional amount due or payable in respect of tax as a result of correcting the inaccuracy or assessment.”
“The right approach for the Tribunal is to look at all the relevant circumstances and consider whether, in the particular case in question those circumstances are special. I see no reason to limit this to circumstances which ... operate on the particular taxpayer in question as opposed to those which could affect a larger number of taxpayers. It is up to HMRC or, where relevant, the Tribunal to decide based on all of the facts of the particular case whether the circumstances in question are, in that case, special.”